Carbohydrate
Hydrolysis of lactose yields

galactose and glucose
glucose and fructose
fructose and galactose
galactose and fructose

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Carbohydrate
When living organisms are cooled below some critical body temperature, the metabolic reactions within their cells cease to function properly. This malfunction occurs because

enzyme active sites become permanently bound to substrates
there is insufficient molecular motion for substrates to interact
the activation energy for the reaction is raised
their enzymes lose the proper three-dimensional shape

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Carbohydrate
Gluconeogenesis is the

synthesis of glucose from non-carbohydrate precursors
breakdown of glucose to pyruvate
formation of glycogen
breakdown of glycogen to glucose

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